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tohn
@tohn
July 2022
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Разложите на множители:
1. (х+3) во второй степени-1
2. 64-(b+1) во второй степени
3. 9-(4а-2) во второй степени
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ВладимирБ
Verified answer
1) (х+3)²-1=(х+3-1)(х+3+1)=(х+2)(х+4)
2) 64 -(b+1)²=8²-(b+1)²=(8-b-1)(8+b+1)=(7-b)(9+b)
3)9-(4a-2)²=3²-(4a-2)²=(3-4a+2)(3+4a-2)=(5-4a)(1+4a)
По формуле
а²-b²=(a-b)(a+b)
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Answers & Comments
Verified answer
1) (х+3)²-1=(х+3-1)(х+3+1)=(х+2)(х+4)2) 64 -(b+1)²=8²-(b+1)²=(8-b-1)(8+b+1)=(7-b)(9+b)
3)9-(4a-2)²=3²-(4a-2)²=(3-4a+2)(3+4a-2)=(5-4a)(1+4a)
По формуле
а²-b²=(a-b)(a+b)